The formula H₂O shows that water is made from two atoms of hydrogen (H) bonded to one atom of oxygen (O). Katie: Time for some science. And today it's a chemistry classic, the periodic table.

Atomic number: The number of protons in the nucleus of an atom of the element. These rules help in identifying and writing chemical symbols consistently across all elements. The symbol serves as a ...

Scientists use the periodic table to quickly refer to information about an element, like atomic mass and chemical symbol. The periodic table’s arrangement also allows scientists to discern trends in ...

Since this podcast was first published, the name of this element has been ratified as flerovium (symbol Fl) by the International Union of Pure and Applied Chemistry (Iupac). The name recognises ...